Smoking pipe



May 18, 1948. 4

Filed May 8, 1942 INVENTOR. Ear/Volvo (17/7/4452.

ATTOEA/EJ v24. ll,

. n n i L "I v W \s v 4 ms f 1/ z 4 6 m n s 7 7 Il my Y a B Z T a: n 3 L a 0 2 2 f {the bowl and stem of a pipe.

Patented May 1 8, 1948 UNITED STATES PATENT OFFICE SMOKING PIPE Raymond J. Miller, Detroit, Mich.

Application May 8, 1942, Serial No. 442,167

11 Claims. 1

This invention relates to smoking pipes and more particularly to an improved pipe having means for adequately cooling and preventing contamination of the smoke.

. Previous attempts havebeen made by others to cool the smoke by providing a tortuous smoke conducting passage. These prior attempts have not proven satisfactory because either insufiicient heat radiating surfaces were provided or no means were available to cool the heat radiating surfaces. In many of the smoking pipes heretofore proposed, complicated structural mechanisms were provided which could not be economically manufactured and which obstructed the flow of smoke through the pipe to an undesirable extent.

An object of this invention is therefore to provide novel and improved means for cooling the smoke conducted through a pipe in such a man- .ner that the smoke is brought into intimate contact with cooled heat radiating surfaces.

Another object of the invention resides in the provision of a smokers pipe which may be readily cleaned by merely disassembling the pipe and wiping on external surfaces which contact and clean the internal surfaces of the smoke conducting passages of the pipe during the process vof disassembling it.

A further object resides in the provision of a saliva trap isolated from the path of smoke travel in such a manner that smoke is not con- .taminated by tar and residue deposited by contact with saliva and wherein the saliva is trapped and isolated from the bowl of the pipe.

A further object of the invention is to provide an adjustable source of auxiliary air to dilute A still further object resides in the provision of a novel cooling arrangement whereby smoke is conducted along a spiral smoke conducting passageway formed in the stem of a pipe between atmospheric air on the outside and cooling air flowing through an annular chamber positioned inside of the spiral passageway.

Another object is to provide readily adjustable means for varying the angular relation between Yet a still further object isto provide a pipe having a mixing chamber interposed between the bowl of the pipe and a shell operably connected to the stem to provide'for a thorough .mixing of smoke and auxiliaryair before the 2 mixture-is transmitted to the smoke conducting passages of the stem.

Other objects and advantages of this invention will be apparent from the following detailed description considered in connection with the accompanying drawings, submitted for purposes of illustrationonly, and not intended to define the scope of the invention, reference being had for that purpose to the subjoined claims.

In the drawings wherein similar reference characters refer to similar parts throughout the several views:

Fig. 1 is a longitudinal sectional view of a smokers pipe embodying the present invention.

Fig. 2 is a view similar to' Fig. 1 illustrating a modified form of the invention.

Fig. 3 is a sectional view taken substantially on the line 33 of Fig, 2, looking in the direction of the arrows.

Fig. 4 is an exploded view of the component elements of the stem of the pipe illustrated in trated in the accompanying drawings, since the invention is capable of other embodiments and of being practiced or carried out in various Ways. Also it is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation.

Referring now to the embodiment of the invention illustrated in Fig. 1, it will be observed that a pipe having a bowl 20 including a combustion chamber 22 is operably connected to a stem 24 having a bit 26 positioned at the other end., The bowl 20 is provided with a threaded collet 28 having internal threads 30 and a radially extending flange 32.

The stem 24 comprises an outer tubular shell -34 having longitudinally extending heat radiating flanges 36 carried thereby extending from the radially extending flange 32 to the other end of the shell 34. A plurality of concentrically disposed cylinders 38, 4:0 and 42 are positioned within the tubular shell 34. The inner cylinder 42 has a centrally disposed bore 44 communicating with the space within the bit 26.

The outer cylinder 38 is provided with a spira yieldingly maintained flange 43 extending longitudinally of the stem 24, The ends of the spiralled flange 46 engage the inner surface of the tubular shell 34 in such a manner that as the cylinder 38 is moved longitudinally within the tubular shell 34 the ends of the spiral flange at contact the inner surface of the tubular shell 3% to exert a cleaning or scrubbing action thereon to thoroughly clean it.

The combustion chamber 2-2 is provided with an aperture it extending through the collet 28 to a passageway 59 formed in the inner cylinder 42 and separated from the smoke conducting bore 44 of the inner cylinder 42 by means of a suitable plug 52 to divide the space within the innercylin- I der 4?. into longitudinally separated smoke conducting passageways so and 44 communicating with the combustion chamber '22 and the b'it z-fi respectively.

After passing through the passageway "50, smoke is directed radially through an aperture '54 communicating with an aperture 55 formed in the outer cylinder 33 as illustrated, the cylinder 40 terminating adjacent the plug 52, whereupon communication is established between the combustion chamber 22 and the spiral smoke conduc ingpassageway 58 between the spiral flange 46 of the outer cylinder 38 and the inner surface of the outer tubular shell 34.

Under the force of suction exerted upon the bit 25, smoke is directed along the spiral passage 58 to an aperture ti] extending through the wall of the outer cylinder 38 in alignment with an aperture 62 formed in the wall of the intermediate cylinder all adjacent the bit 26. Smoke is thus directed from the spiral passageway 58 to an annular smoke conducting chamber '64 positioned between the intermediate cylinder 48 and. the internal cylinder as. The smoke is directed in this chamber to flow toward the bowl 213 of the pipe.

'Apertures Ea: extending through the inner cylinder 42 are provided to interconnect'the smoke conducting chamber 554 with the bore 44 in the inner cylinder 22 communicating with the space within the bit 25.

Means may be provided to admit diluting and cooling air at any desired point between the combustion chamber and the bit. One illustrative example of means to admit diluting and cooling air admits auxiliary air adjacent the bit 26 of the pipe. One desirable form of such auxiliary air admitting device comprises a rotatable ring 68 in any predetermined angular position by a spring Til and having radially extending apertures 12 communicating with axially extending slots 14 leading to an annular chamber it between the outer cylinder 38 and the intermediate cylinder 45!. The chamber 16 thus extends axially between the smoke conducting passageways 58 and (i l and communicates by way of ports is with the spiralled smoke conducting passage 58 formed between the outer cylinder 33 and the tubular shell 34.

It will thus be seen that the smoke passing through the spiral smoke conducting passageway 58 is cooled by atmospheric air on the outside of the tubular shell 34 and cooling air flowing through the chamber :75 between the outer cylinder 38 and the intermediate cylinder 4%). The smoke diluting or cooling air is heated as it flows through the stem to be. mixed with the smoke coming from the combustion chamber 22.

The inner cylinder 62 is preferably provided with a pair of spaced radially extending flanges 786130 form a saliva trap 82 within the space between the cylinders lltl and 42 and "between the flanges. The flanges 89 exert a cleaning action on the inner surface of the cylinder 40 as the pipe is disassembled. The saliva trap 82 communicates with the bore 44 within the inner cylinder 42 by way of ports 34 positioned beyond the ports 53 which admit smoke to the bore 44 from the chamber 54. A saliva trap is thus formed within the stem of the pipe isolated from the path 0f smoke travel.

The inner cylinder 42 is also provided with a male threaded portion 86 adapted to engage the female threads 36 of the collet 28 to maintain the parts in the assembled condition. The angular position of the bowl as relative to the bit 26 may be varied to suit individual taste by adjusting the threaded position of the collet 28 within the bowl '23. r

A guide pin 88 may be interposed between the bit 26 and the intermediate cylinder 40 to align the apertures 62 formed in the intermediate cylinder til with the inner cylinder 42 in such a manner that the ports'fifi interconnecting the annular chamber 54 with the bore 44 within the inner cylinder will be positioned on top, and the apertures or ports 84 interconnecting the bore 44 of the inner cylinder and the saliva trap 82 will be positioned on the bottom. A. suitable guide pin 98 preferably carried by the intermediate-cylinder may be provided to align the outer cylinder -38 to interconnect the aperture '60 formed therein with the aperture 62 formed in the intermediate cylinder-4Q.

The amount of cooling ordilutingair'may be varied by rotating the ring (58 tovary'the alignment of the apertures 72 with the slots l4.

The operation of this embodiment of the invention is as follows: Tobacco tobe burned is placed in the combustion chamber 22 formed in the bowl 2t and the smoke passes through-the aperture 48 to the passageway 58. The smoke is then blocked off by the plug-bland passes upwardly through the'apertures 54 and 56 to the spiral smoke conducting passage 58 -formed between the outercyl-inder t'il and the'inn'er-surface of the tubularshell 34.

'As the smoke approaches the bit '26 it passes through the aligned apertures'tifi and B 2 110 the smoke conductin chamber 64 between the intermediate cylinder is and the i-nne'r cylinder 42. The smoke is then directed back toward the bowl 2% and passes from the chamber 64 through the apertures 65 into the space or bore 44 withi-n the inner cylinder 42 communicating with the bit' 25.

in Fig. 2 is similar in many respects to that it Cooling air for diluting the smoke passes through the apertures 12 and "slots 14 th theannular passageway l6 interposed between the outer cylinder 38 and the:intermediate cylinder 49. This auxiliary or cooling air passes throughthe ports 18 to the spiralsmoke conducting chamber '58 to be admixed with the smoke from the COmbUSlZlQn-ChaIYl-lC-BI' ZE to dilute the smoke to a desired degree.

'It will be noted that the intermediate cylinder 48 engages the radial'hanges'Sll to forin the saliva trap 82 and also overlies both ends of the plug 52 positioned in the aperture in the inner cylinder 42 to prevent the plug from becoming disassembled from the inner cylinder 42 when the pipe is partially dia ss'emble'd.

The embodiment of the inv'entionillustrated lustrated in Fig. 1. Corresponding partshave therefore been given corresponding reference numerals with theaddition of 100.

A shell I92 is provided with a bowl l 94hel'd'in place therein by a turned flange I96. A mixing chamber I98 is thus provided between the bowl I94 and the shell I92. A divided collet I99 having radially spaced aligned apertures I91 and I95 respectively engages the shell I92 and is securely I clamped therein by means of a screw I93. The stem I24 of the pipe may be operably connected to the collet I99 by threading the male threaded portion I86 of the inner cylinder I40 into the female threaded portion I30 of the collet I99. The

angular relation of the shell I92 relative to the bit I26 may be varied by changin the angular relation of the collet I99 relative tothe shell I92.

'This may be accomplished by changing the clamped position of'the contacted portion of the shell I92 relative 'to the spaced portions of the collet I99 clamped together by the screw I93.

It will also be observed thatthe inner cylinder I42 is provided with a radially fluted end portion IBI embedded into the bit I26 to securely maintain the bit in assembled relation with the inner cylinder I42.

The operation of this embodiment of the invention is generally similar to that of the embodiment of Fig. 1. It will be observed that cool The embodiment of the invention illustrated in Fig. 6 is generally similar to that illustrated in Fig. 2. Corresponding parts have therefore been given corresponding reference numerals with the addition of I00.

This embodiment of the invention illustrates a so-called upside-down pipe wherein the stem 224 is attached to the shell 292 adjacent the top of the bowl 294; Air and smoke in the mixing chamber 298 pass out through the ports or apertures 291 to the spiral smoke conducting passageway 258. Greater mixing of the cooling or auxiliaryair admitted to the mixing chamber 298 through the apertures 295 in the collet 299 and the smoke from the combustion chamber is effected because of the longer travel of smoke in the mixing chamber.

This is a continuation in part of my copending 1940, now Patent No. 2,357,018, patented on August 29, 1944.

Iclaim:

1. A smokin pipe comprising a bowl, a shell surrounding the bowl and cooperating therewith to form a mixing chamber, a bit, a stem comprising a plurality of concentrically disposed cylinders interposed between the mixing chamber and.

bit, a plurality of concentrically disposed smoke conducting passages extending longitudinally of the stem in opposite directions, an annular smoke cooling chamber interposed between said plurality of concentrically disposed smoke conducting passages, means to admit cooling air to said cooling'chamber at a point adjacent the bit, and connecting means adjacent thebowl between the cooling chamber and said mixing chamber.

'2. A smoking pipe comprising a shell having a substantially flat surface, a bowl positioned'in the shell, 9. collet clampingly engaging the substantially flat surface of said shell, air inlet and discharge openings extending. through, saidcollet, a. female threaded portion carried by the collet, a bit, a stem comprising a plurality-of concentrically disposed cylinders interposed between the bowl and bit, a plurality of spaced smoke conducting passages interposed between said cylinders, connecting means between one of said smoke conductingpassages and the bit, and a male threaded portion carried by the inner cylinder: beyond said connecting means to, be connected to said female threaded portion to operably connect said stem to the shell. v

3. A smoking pipe comprising a bowl having a combustion chamber, a bit, a plurality of concentrically disposed cylinders interposed between the bowl and bit, cooperating screw threaded connecting means between the bowl and the inner of said concentric cylinders, means adjacent-the bowl to separate the space within the innercylinder into two longitudinally spaced chambers, connecting means between the combustion chamber and a smoke conducting passage interposed between a plurality of said cylinders, a smoke conducting passage interposed between the inner of said cylinders and another of said concentric application Serial No. 349,265, filed August 1,.

cylinders communicating with the first mentioned smoke conducting passage, a radial flange carried by the inner cylinder spaced toward the bit from said separating means to provide a saliva trap between the flange and said separating means, andconnecting means between'said last named smoke conducting passage and the inner of said cylinders positioned toward the bit from said flange to isolate the last named smoke passage from said saliva trap.

4. A smoking pipe comprising a bowl, a shell surrounding the bowl and cooperating therewith to form a mixing chamber, a bit, a stem comprising a plurality of concentrically disposed "cylinders interposed between the mixing chamber and bit, a plurality of concentrically disposed smoke conducting passages extending longitudinaily of the stem in opposite directions, a cooling chamber interposed between said plurality of'concentrically disposed smoke conducting passages, means to admit cooling air to said cooling chamber at a point adjacent the bit, connecting means between the cooling chamber and said mixing chamber, and a saliva trap positioned between a plurality of said cylinders adjacent the shell and isolated from the path ofsmoke travel within said cylinders and the cooling chamber.

5. A smoking pipe comprising a bowl having a combustion chamber, a bit, a plurality of concentrically disposed cylindersinterposed between the bowl and bit, cooperating screw threaded connecting means betweenthe .bowl and one of said concentric cylinders, means adjacent the bowl to separate the space within the inner cylinder into two longitudinally spaced chambers, connecting means between the combustion chamber and a spiralled smoke conducting passage interposed between a plurality of said cylinders, a smoke conducting passage interposed between the inner of said cylinders and another of said concentric cylinders communicating with the first mentioned smoke conducting passage, a radialflange carried by the inner cylinderspaced toward -the bit from said separating means to provide a, saliva trap between the flange and said separating means, and connecting means between said last named smoke conducting passage and the inner isaid cylinders positionedtoward'ithe hitirom saidilange :Ltodsolate the smoke passage ifrom said saliva :trap, the-:spinalled smoke conducltinglpassage and said .cradia-l .tflange cooperating itofclean the inner surfacesuof "a pluralityof saidtonctmtrlcally'disposed cylinders.

:iA sm'okers'pipe:compnising-azbowl,1a metallic stem includin a hollow tu'bulancasing and a pair "oi"telescoped tubular members :remoeably imaintained within s'aid c'asin'g in spaced-relation to *provide within-sthe stem an cannula-r passage between the casing and the router member of "said spair, a second annular passage :between :said

ing ito'the bowl and communicating with said third massage which possesses :por'ts Heading to the hollow-oi said extension of the bit to :provide a "smoke conducting con'duit through said stem, said 'seoond' -passage leadin from openings in the stem communicating with the atmosphere and leading to thebowl forprov iding a cooling air stream between the first and th'ird passa'ges and providing for dilution of the smoke with air vat ithe' bow'il, said smoke conducting and said air conducting'passages g communicating solely at the -bowl.

AA smokers pipe wliieh com prises a *bowl,

.a metallic-stem comprising a hollow tubular casing and a :pair "of telescopedtubdlar members re- .m'ovably maintained within said casing in spaced relation to provide within the stem annular passage between the casing-and the :ou'ter memv-ber of said pair and also asecond annularpassage between said spaced members, and a bit having a tubularextensiondisposed within the hollow of the inner member of said :pair and "spa'c'ed thereirom to provide a third annular pas- :sage, :said extension being =removably secured' to dth'e ibowl for maintaining the :pipe in --assembled condition, sai'd first passage-having smoke 'receiving ports leading *to the bowl and communi- Pcating with said "third passage which possesses ports leading to the hollow of said-extension of the .hit to provide a smokeconducting conduit through said stem, said second pass-age leading from openings inthe-'s'tem communicating with BthE: atmosphere :and leading 'to the bowl for *pro- "vidingacoolingair streamhetween-the first and third passages, :said smoke conducting and said air 'conductingzpassage's communicatin solely at the bowl, the router member 'o'f 'said pair 'being :provided with :a spiral-led projection extending into said first passage and contact'ing the walls 0f saidacasing, said "extension "of the bit being provided with or an abutment-extending into said :third-epassage and contacting the well of t'he inner a-membertof :sa'id pai-r, whereby -on removal of :saidwmembers said-spiral and said abutment re- :spectively scrape 'thewalls of said-first and third passages for .cleaning the smoke conducting 18. ;:A :smnkers pipe 'compris'ing a bowl, =a 'casing. a :metallic stem having iopen'ings communicat ng with the atmosphere and inchidingia hol low tubular. member maintained in said casing to provide anannular. longitudinally extending pas- .sagedbetweenits walls and iJhOSQrOf the :casi-ng,

L'fl-iSBGQHd: hollow tubular @member maintaine in .said first member-to provide an annular -longis cleaning :action thereon.

8 tndinally extendin passage between its walls and athoserof the first :memben-and a: third :hollow tubular member .rmaintained lin 'esaid 7 second member to provide Ian-annular .longitndinally extending massage between 11135 :wa-lls and those "of the second member, a "bit :connectedato said third 'memherezrrd having a ,nassage {communicating with the hollow in the athihd member, a communicationconnecting the passage between the teasing and :the first :memloer with the end of the hollowin the third member which :leads to the combustionrchamber of :said -bowl,aa member for cutting on" :Saiid hollow adjacent 'the side of said communication ".facing "the bit, the (Passage betweenssaid casing randafirst'lmember leading "to the gpassagerbetween "the-:secondand third membeI'SJa-Ild to the hollowi-n the-third member to provide ;a smoke conducting conduit from the bowl to the ...bit,, the passage between the, first and second:anemberslleading from said openin the, stem and leading zto thesmdke conducting conduit to provide air cooling oiethe smoke conducting "conduitland 'to provide for the dimtionnfithe smoke :withair.

9. Arsmolringpipe comprising .a bowl, a bit, a pluralityyoi thin walled concentric cylinders interposed between the bowl and bitaarspiral flange carried by one of said cylinders to form a spiral smoke-conducting "cooling passage, a radial :ilange carried by another of said cylinders to confine the smoke to a predetermined portion .of the space between a plurality .of said cylinders,

' and connecting anearnswbetween said last-named space iain'dfl the bore of the inner of: said cylinders communicating with the hit, the inner :of said cylinders shaving atad-ially extended flange .adjacent; the bowl and cooperating with the inner walls of the next adjacent cylinder to provide-a saliva trap positioned adjaoent the bowl andbetween said- :cylindersand isolated from the smoke path, said spiral flange-and radial flange cooperating foo/engage :the inner walls of their associated cylinders when disassembled to exert a cleaningactionthereon.

1 0. A smoking pipe comprising a, bowl, -a bit,

. a thin tubular shellinterposed between. the bowl :and .bit, apluralityof thin walled concentr-iocyl- .inders interposed between the bowl and bit, a

spiralflangeaearried 'iby one -of said cylinders .to form a spiral smoke conducting -zcooling passage, aradial flange carried-by another of said cylinders adjacent the bowlto confine the smoke'to apredeternnned portion :of the space between a plurality of said cylinders, connecting means between said last named space and the bore of the inner -,;of said cylinders communicating with the bit, and ea saliva trap isolated from .said space and communicating with the bore of the inner cylinder and positioned longitudinally between the radial flange and the bowl andradiallybetween the inner cylinder and the adjacent cylinder, said spiral flangev and radial flange cooperating 'to'engage the. inner walls of their associated cylinders when disassembled to exert a w1.1. A-smokerfs pipe comprisinga bowl, a stem havingaan 'outer tubular casing and a group of tubular members spaced =fromleach other and arranged in nested concentric relation to provide annular smoke passages running lengthwise through the stem, .said ,group being .removably maintained in said casing and spaced therefrom to provide an additional :annular passage running lengthwise through the stem, a certain one ,onebf said membersbeingpmvided with, projecting portions extending into one of said passages, and a bit connected to the innermost member and having a bore communicating with the interior of said innermost member, said bit and innermost member being removably attached to said bowl for maintaining said stem in assembled relation whereby said stem may be disassembled by removal of said bit and innermost member, said projecting portions being moved through one passage by the disassembling operation for cleaning said one passage, spaced radially extended flanges carried by the innermost member adjacent the connection to the bowl to cooperate with the adjacent tubular member to provide a saliva trap, a port extending through the bottom wall of the innermost member to communicate with the saliva trap, and a port through the upper wall of the innermost member forwardly of said flanges to connect the space within the innermost member with the smoke passages and to isolate the smoke passages from the saliva trap.

RAYMOND J. MILLER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 924,508 Talarico June 8, 1909 1,043,869 Ranson Nov, 12, 1912 1,403,527 Villaume Jan. 17, 1922 1,656,787 Grenier Jan. 17, 1928 1,671,899 Hilshansky May 29, 1928 1,955,474 Schumacher et al, Apr. 17, 1934 2,243,091 Eguchi May 27, 1941 2,248,259 White July 8, 1941 FOREIGN PATENTS Number Country Date 77,836 Switzerland June 1, 1918 99,691 Australia Apr, 10, 1925 14,964 Denmark Aug. 14, 1911 29,965 Germany Dec, 20, 1884 5,612 Great Britain 1894 628,159 France June 21, 1927 

